#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstring>
using namespace std;
const int N=0x3f3f;
int n,m;
int a[N];
bool is(int q){
	for(int i=1;i*i<=q;i++)
		if(q%i==0)
			return false;
	return true;
}
int main(){
	cin>>n;
	if(is(n-4)){
		cout<<2<<" "<<2<<" "<<n-4<<endl;
	}
	for(int i=3;i<=n;i+=2){
		for(int j=i;j<=n;j+=2){
			if(is(i)){
				if(is(j)){
					if(is(n-i-j)){
						if(i<=j&&j<=n-i-j){
							cout<<i<<" "<<j<<" "<<n-i-j<<"\n"; 
							break;
						}
					
					}
						
				}
			}
		}
	}
	return 0;
}